The child side of clone needs to set the secondary
syscall return value, r7, to indicate syscall success.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/nios2/target_cpu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/linux-user/nios2/target_cpu.h b/linux-user/nios2/target_cpu.h
index 2d2008f002..830b4c0741 100644
--- a/linux-user/nios2/target_cpu.h
+++ b/linux-user/nios2/target_cpu.h
@@ -27,6 +27,7 @@ static inline void cpu_clone_regs_child(CPUNios2State *env, target_ulong newsp,
         env->regs[R_SP] = newsp;
     }
     env->regs[R_RET0] = 0;
+    env->regs[7] = 0;
 }
 
 static inline void cpu_clone_regs_parent(CPUNios2State *env, unsigned flags)
-- 
2.25.1